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Modern approaches to analysis of local depassivation kinetics of copper and iron under inorganic and organic activators
The effect of inorganic (sodium chloride) and organic (glycine) substances at anodic behavior of copper and iron in alkaline mediums, where depassivation of metals is possible, is investigated. Series of electrochemical and physical methods, determining common and specific regularity of pitting process, was used for systems analysis. Their dominating factors taking account of metal nature, electrolyte composition, phenomena of competitive adsorption and complexion are established. On the basis of modern theories, confirmed by experimentally, the supposition about pitting process mechanism in studied systems is stated.
copper; iron; pitting process; mechanism; sodium chloride; glycine.
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